how many FTWM resigned after maternity to stay at home with LO? Is it worth to give up your career, when baby can be placed in an IFC, which might even be more beneficial for baby. Does this stretch the family finances a lot?

If you are used to it being a FTWM, changing to a SAHM is a challenge. This is not only on the financial side but the overall feel. As this is a major decision, I would suggest you to talk to your other half before making this decision. If decision is not made or discussed carefully, you may end up having more problems be it between husband and wife or monetary.